Several rounds of snow fell in the Northeast this week, bringing the region its first taste of wintry weather this season.

Some of the highest snow accumulations were measured Saturday, Oct. 22, to Sunday, Oct. 23, in the Green Mountains of Vermont. Bolton, Vermont, recorded 9 inches of snow, according to AccuWeather Meteorologist Brian Lada.

Another storm brought accumulating heavy, wet snow to parts of the Northeast from Wednesday night into Friday.

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The midweek storm delivered the first observed snow and sleet of the season to parts of the Northeast including Hartford, Connecticut, Worcester, Massachusetts, and White Plains, New York, AccuWeather Senior Meteorologist Alex Sosnowski stated.

Rain was falling in New York City Thursday night when a plane carrying Republican vice presidential candidate Mike Pence skidded off a runway at LaGuardia Airport. There were no reports of injuries.

For the first time since late September, a tropical storm formed in the East Pacific. While Seymour eventually strengthened into a major hurricane, reaching Category 4 strength on Tuesday, the storm remained well away from the coast of Baja California, Mexico. By Thursday, Seymour had weakened back to a tropical storm.

The northern Indian Ocean saw its first named tropical cyclone since May with the development of Cyclone Kyant. The storm weakened before reaching land, but it did deliver rain to parts of southern India.

Severe flooding struck parts of Indonesia on Monday, resulting in at least one fatality. The floodwaters swept away cars in Bandung, the capital of Indonesia's West Java province.

Two strong earthquakes rattled central Italy on Wednesday, just two months after a powerful 6.2 magnitude earthquake killed nearly 300 people and left behind widespread destruction in the same part of the country.

According to the U.S. Geological Survey, the first quake was a magnitude 5.5 that struck roughly 5 miles southeast of Sellano, Italy, at 7:10 p.m. local time. At 9:18 p.m., local time, a 6.1 temblor struck about 2 miles west of Visso, Italy.

According to the Associated Press, the quakes were aftershocks of the powerful Aug. 24 quake. Several homes suffered serious damage in Visso, while significant damage was reported in areas that were still off-limits following the August earthquake.

The United Nations' World Meteorological Organization (WMO) announced on Monday that globally averaged concentration of carbon dioxide in the atmosphere reached new records in 2016.

(Photo/UNEP)

The WMO is attributing the presence of a strong El Niño which lasted from 2015 into 2016 as a cause of the record high levels of carbon dioxide. El Niño caused droughts in tropical regions, which reduced the capacity of "sinks" like forests, vegetation and the oceans to absorb carbon dioxide, according to the WMO.

The agency predicts that carbon dioxide concentrations will not dip below pre-2015 levels for many generations.

"The year 2015 ushered in a new era of optimism and climate action with the Paris climate change agreement. But it will also make history as marking a new era of climate change reality with record high greenhouse gas concentrations," said WMO Secretary-General Petteri Taalas.

Several AccuWeather meteorologists and staff writers contributed content to this article.

Have questions, comments, or a story to share? Email Kevin Byrne at Kevin.Byrne@accuweather.com, follow him on Twitter at @Accu_Kevin. Follow us @breakingweather, or on Facebook